Page 259 - The Central Motor Vehicles Rules, 1989

RULE 115A THE CENTRAL MOTOR VEHICLES RULES, 1989 231

12
19 £P < 37 5.0 4.7(HC+NOx) 0.015 1´10 NRSC
and
NRTC
12
37 £P < 56 5.0 4.7 (HC+NOx) 0.015 1´10 ^
12
56 £P < 130 5.0 0.19 0.4 0.015 1´10 ^
130 £P < 560 3.5 0.19 0.4 0.015 1´10 12

P ³ 560 3.5 0.19 3.5 0.045 — NRSC
Note : (i) The test shall be done on engine dynamometer
(ii) The test procedure for measurement of gross power (without Fan)
shall be as per procedure laid down in AIS: 137 and as amended time
to time.
(iii) For gross power measurement the tolerance shall be applied for type
approval and conformity of production as per Table 3 given below:—
TABLE 3
Engine Type Rated power [%] Other measurement Tolerance for engine
points on the curve [%] speed [%]

Type approval ±2 ±4 ±1.5
Conformity of ±5 ±10 ±5
production

(iv) Test procedure for measurement of emission of visible and gaseous
pollutant and particulate matter shall be as per procedure laid down
in AIS: 137 and as amended from time to time.
(v) The emission of visible pollutant (smoke) shall not exceed the limit
values of smoke density when expressed as light absorption
coefficients as given in Annexure I of sub- rule (9) of rule 115, when
tested on engine dynamometer at full load at six speeds as per
procedure laid down in AIS: 137 and as amended from time to time.
(vi)(a) Engine manufacture may opt for an engine test as mentioned in table
4 given below for evaluating deterioration factors as per procedure
laid down in AIS:137 and as amended from time to time:—
TABLE 4

Category (Power Band) Emission durability period (hours)
£37kW (constant speed Engines) 3000
£37kW (Variable speed Engines) 5000
> 37 kW 8000
(b) As an alternative to use a service accumulation schedule to determine
deterioration factors, engine manufacturers may select to use the
assigned multiplicative deterioration factors as per Table 5 given
below-